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<h1 id="firstHeading" class="firstHeading">定宽整数类型 <span class="t-mark-rev t-since-c99">(C99 起)</span></h1>
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<h3><span class="mw-headline" id=".E7.B1.BB.E5.9E.8B">类型</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>定义于头文件 <code>&lt;stdint.h&gt;</code> </div>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>int8_t</span><span>int16_t</span><span>int32_t</span><span>int64_t</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  分别为宽度恰为 8、16、32 和 64 位的有符号整数类型<br>无填充位并对负值使用补码<br>（仅若实现支持该类型才提供） <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>int_fast8_t</span><span>int_fast16_t</span><span>int_fast32_t</span><span>int_fast64_t</span></span></div></div>
</td>
<td>  分别为宽度至少有 8、16、32 和 64 位的最快的有符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>int_least8_t</span><span>int_least16_t</span><span>int_least32_t</span><span>int_least64_t</span></span></div></div>
</td>
<td>  分别为宽度至少有 8、16、32 和 64 位的最小的有符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>intmax_t</span></span></div></div>
</td>
<td>  最大宽度的有符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>intptr_t</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  足以保有指针的有符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>uint8_t</span><span>uint16_t</span><span>uint32_t</span><span>uint64_t</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  宽度恰为 8、16、32 和 64 位的无符号整数类型<br>（仅若实现支持该类型才提供） <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>uint_fast8_t</span><span>uint_fast16_t</span><span>uint_fast32_t</span><span>uint_fast64_t</span></span></div></div>
</td>
<td>  分别为宽度至少有 8、16、32 和 64 位的最快无符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>uint_least8_t</span><span>uint_least16_t</span><span>uint_least32_t</span><span>uint_least64_t</span></span></div></div>
</td>
<td>  分别为宽度至少有 8、16、32 和 64 位的最小无符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>uintmax_t</span></span></div></div>
</td>
<td>  最大宽度的无符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>uintptr_t</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  足以保有指针的无符号整数类型 <br> <span class="t-mark">(typedef)</span> </td></tr>
</table>
<h3><span class="mw-headline" id=".E5.AE.8F.E5.B8.B8.E9.87.8F">宏常量</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>定义于头文件 <code>&lt;stdint.h&gt;</code> </div>
</td></tr>

<tr>
<td colspan="2"> <h5> <span class="mw-headline" id=".E6.9C.89.E7.AC.A6.E5.8F.B7.E6.95.B4.E6.95.B0.EF.BC.9A.E6.9C.80.E5.B0.8F.E5.80.BC">  有符号整数：最小值 </span></h5>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT8_MIN</span><span>INT16_MIN</span><span>INT32_MIN</span><span>INT64_MIN</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">int8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int64_t</span></span> 类型对象的最小值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT_FAST8_MIN</span><span>INT_FAST16_MIN</span><span>INT_FAST32_MIN</span><span>INT_FAST64_MIN</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">int_fast8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_fast16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_fast32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_fast64_t</span></span> 类型对象的最小值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT_LEAST8_MIN</span><span>INT_LEAST16_MIN</span><span>INT_LEAST32_MIN</span><span>INT_LEAST64_MIN</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">int_least8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_least16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_least32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_least64_t</span></span> 类型对象的最小值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INTPTR_MIN</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">intptr_t</span></span> 类型对象的最小值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INTMAX_MIN</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">intmax_t</span></span> 类型对象的最小值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr>
<td colspan="2"> <h5> <span class="mw-headline" id=".E6.9C.89.E7.AC.A6.E5.8F.B7.E6.95.B4.E6.95.B0.EF.BC.9A.E6.9C.80.E5.A4.A7.E5.80.BC">  有符号整数：最大值 </span></h5>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT8_MAX</span><span>INT16_MAX</span><span>INT32_MAX</span><span>INT64_MAX</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">int8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int64_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT_FAST8_MAX</span><span>INT_FAST16_MAX</span><span>INT_FAST32_MAX</span><span>INT_FAST64_MAX</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">int_fast8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_fast16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_fast32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_fast64_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT_LEAST8_MAX</span><span>INT_LEAST16_MAX</span><span>INT_LEAST32_MAX</span><span>INT_LEAST64_MAX</span></span></div></div>
</td>
<td>   <span class="t-c"><span class="mw-geshi c source-c">int_least8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_least16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_least32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">int_least64_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INTPTR_MAX</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">intptr_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INTMAX_MAX</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">intmax_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr>
<td colspan="2"> <h5> <span class="mw-headline" id=".E6.97.A0.E7.AC.A6.E5.8F.B7.E6.95.B4.E6.95.B0.EF.BC.9A.E6.9C.80.E5.A4.A7.E5.80.BC">  无符号整数：最大值 </span></h5>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINT8_MAX</span><span>UINT16_MAX</span><span>UINT32_MAX</span><span>UINT64_MAX</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">uint8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint64_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINT_FAST8_MAX</span><span>UINT_FAST16_MAX</span><span>UINT_FAST32_MAX</span><span>UINT_FAST64_MAX</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">uint_fast8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint_fast16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint_fast32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint_fast64_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINT_LEAST8_MAX</span><span>UINT_LEAST16_MAX</span><span>UINT_LEAST32_MAX</span><span>UINT_LEAST64_MAX</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">uint_least8_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint_least16_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint_least32_t</span></span>、<span class="t-c"><span class="mw-geshi c source-c">uint_least64_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINTPTR_MAX</span></span></div><div><span class="t-lines"><span><span class="t-mark">(可选)</span></span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">uintptr_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINTMAX_MAX</span></span></div></div>
</td>
<td>  <span class="t-c"><span class="mw-geshi c source-c">uintmax_t</span></span> 类型对象的最大值 <br> <span class="t-mark">(宏常量)</span> </td></tr>
</table>
<h3><span class="mw-headline" id=".E6.9C.80.E5.B0.8F.E5.AE.BD.E5.BA.A6.E6.95.B4.E6.95.B0.E5.B8.B8.E9.87.8F.E7.9A.84.E5.87.BD.E6.95.B0.E5.AE.8F">最小宽度整数常量的函数宏</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INT8_C</span><span>INT16_C</span><span>INT32_C</span><span>INT64_C</span></span></div></div>
</td>
<td>  展开成拥有以其参数指定的值和类型分别为 <span class="t-c"><span class="mw-geshi c source-c">int_least8_t</span></span> 、 <span class="t-c"><span class="mw-geshi c source-c">int_least16_t</span></span> 、 <span class="t-c"><span class="mw-geshi c source-c">int_least32_t</span></span> 、 <span class="t-c"><span class="mw-geshi c source-c">int_least64_t</span></span> 的整数常量表达式  <br> <span class="t-mark">(宏函数)</span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>INTMAX_C</span></span></div></div>
</td>
<td>  展开成拥有以其参数指定的值和 <span class="t-c"><span class="mw-geshi c source-c">intmax_t</span></span> 类型的整数常量表达式 <br> <span class="t-mark">(宏函数)</span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINT8_C</span><span>UINT16_C</span><span>UINT32_C</span><span>UINT64_C</span></span></div></div>
</td>
<td>  展开成拥有以其参数指定的值，类型分别为 <span class="t-c"><span class="mw-geshi c source-c">uint_least8_t</span></span> 、 <span class="t-c"><span class="mw-geshi c source-c">uint_least16_t</span></span> 、 <span class="t-c"><span class="mw-geshi c source-c">uint_least32_t</span></span> 、 <span class="t-c"><span class="mw-geshi c source-c">uint_least64_t</span></span> 的整数常量表达式 <br> <span class="t-mark">(宏函数)</span>
</td></tr>

<tr class="t-dsc">
<td>  <div class="t-dsc-member-div"><div><span class="t-lines"><span>UINTMAX_C</span></span></div></div>
</td>
<td>  展开成拥有以其参数指定的值和 <span class="t-c"><span class="mw-geshi c source-c">uintmax_t</span></span> 类型的整数常量表达式 <br> <span class="t-mark">(宏函数)</span>
</td></tr>
</table>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdint.h&gt;</span>
UINT64_C<span class="br0">(</span><span class="nu12">0x123</span><span class="br0">)</span> <span class="co1">// 可以展开成 0x123ULL 或 0x123UL</span></pre></div></div>
<p><br>
</p>
<h3><span class="mw-headline" id=".E6.A0.BC.E5.BC.8F.E5.AE.8F.E5.B8.B8.E9.87.8F">格式宏常量</span></h3>
<table class="t-dsc-begin">

<tr class="t-dsc-header">
<td colspan="2"> <div>定义于头文件 <code>&lt;inttypes.h&gt;</code> </div>
</td></tr>
</table>
<h4><span class="mw-headline" id="fprintf_.E7.B3.BB.E5.88.97.E5.87.BD.E6.95.B0.E7.9A.84.E6.A0.BC.E5.BC.8F.E5.B8.B8.E9.87.8F"><span class="t-lc"><a href="../io/fprintf.html" title="c/io/fprintf">fprintf</a></span> 系列函数的格式常量</span></h4>
<table class="wikitable" style="text-align:center; font-size:85%; max-width:90em;">

<tr>
<th rowspan="3"> <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> 或<br><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span><br>的等价者
</th>
<th rowspan="3"> 描述
</th>
<th colspan="5"> 数据类型的宏
</th></tr>
<tr>
<td> <br><br><br><br><div class="t-vertical"><div><code>[u]int<b>x</b>_t</code></div></div><br><br><br><br>
</td>
<td> <div class="t-vertical"><div><code>[u]int_least<b>x</b>_t</code></div></div>
</td>
<td> <div class="t-vertical"><div><code>[u]int_fast<b>x</b>_t</code></div></div>
</td>
<td rowspan="2"> <div class="t-vertical"><div><code>[u]intmax_t</code></div></div>
</td>
<td rowspan="2"> <div class="t-vertical"><div><code>[u]intptr_t</code></div></div>
</td></tr>
<tr>
<td colspan="3"> <b>x</b> = 8 、 16 、 32 或 64
</td></tr>
<tr>
<th> <code>d</code>
</th>
<td rowspan="2" style="text-align:left;"> 有符号十进制整数值的输出
</td>
<td> PRId<b>x</b>
</td>
<td> PRIdLEAST<b>x</b>
</td>
<td> PRIdFAST<b>x</b>
</td>
<td> PRIdMAX
</td>
<td> PRIdPTR
</td></tr>
<tr>
<th> <code>i</code>
</th>
<td> PRIi<b>x</b>
</td>
<td> PRIiLEAST<b>x</b>
</td>
<td> PRIiFAST<b>x</b>
</td>
<td> PRIiMAX
</td>
<td> PRIiPTR
</td></tr>
<tr>
<th> <code>u</code>
</th>
<td style="text-align:left;"> 无符号十进制整数值的输出
</td>
<td> PRIu<b>x</b>
</td>
<td> PRIuLEAST<b>x</b>
</td>
<td> PRIuFAST<b>x</b>
</td>
<td> PRIuMAX
</td>
<td> PRIuPTR
</td></tr>
<tr>
<th> <code>o</code>
</th>
<td style="text-align:left;"> 无符号八进制整数值的输出
</td>
<td> PRIo<b>x</b>
</td>
<td> PRIoLEAST<b>x</b>
</td>
<td> PRIoFAST<b>x</b>
</td>
<td> PRIoMAX
</td>
<td> PRIoPTR
</td></tr>
<tr>
<th> <code>x</code>
</th>
<td style="text-align:left;"> 无符号小写十六进制整数值的输出
</td>
<td> PRIx<b>x</b>
</td>
<td> PRIxLEAST<b>x</b>
</td>
<td> PRIxFAST<b>x</b>
</td>
<td> PRIxMAX
</td>
<td> PRIxPTR
</td></tr>
<tr>
<th> <code>X</code>
</th>
<td style="text-align:left;"> 无符号大写十六进制整数值的输出
</td>
<td> PRIX<b>x</b>
</td>
<td> PRIXLEAST<b>x</b>
</td>
<td> PRIXFAST<b>x</b>
</td>
<td> PRIXMAX
</td>
<td> PRIXPTR
</td></tr></table>
<h4><span class="mw-headline" id="fscanf_.E7.B3.BB.E5.88.97.E5.87.BD.E6.95.B0.E7.9A.84.E6.A0.BC.E5.BC.8F.E5.B8.B8.E9.87.8F"><span class="t-lc"><a href="../io/fscanf.html" title="c/io/fscanf">fscanf</a></span> 系列函数的格式常量</span></h4>
<table class="wikitable" style="text-align:center; font-size:85%; max-width:90em;">

<tr>
<th rowspan="3"> <span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">int</span></span></span> 或<br><span class="t-c"><span class="mw-geshi c source-c"><span class="kw4">unsigned</span> <span class="kw4">int</span></span></span><br>的等价者
</th>
<th rowspan="3"> 描述
</th>
<th colspan="5"> 数据类型的宏
</th></tr>
<tr>
<td> <br><br><br><br><div class="t-vertical"><div><code>[u]int<b>x</b>_t</code></div></div><br><br><br><br>
</td>
<td> <div class="t-vertical"><div><code>[u]int_least<b>x</b>_t</code></div></div>
</td>
<td> <div class="t-vertical"><div><code>[u]int_fast<b>x</b>_t</code></div></div>
</td>
<td rowspan="2"> <div class="t-vertical"><div><code>[u]intmax_t</code></div></div>
</td>
<td rowspan="2"> <div class="t-vertical"><div><code>[u]intptr_t</code></div></div>
</td></tr>
<tr>
<td colspan="3"> <b>x</b> = 8 、 16 、 32 或 64
</td></tr>
<tr>
<th> <code>d</code>
</th>
<td style="text-align:left;"> 有符号十进制整数值的输入
</td>
<td> SCNd<b>x</b>
</td>
<td> SCNdLEAST<b>x</b>
</td>
<td> SCNdFAST<b>x</b>
</td>
<td> SCNdMAX
</td>
<td> SCNdPTR
</td></tr>
<tr>
<th> <code>i</code>
</th>
<td style="text-align:left;"> 有符号整数值的输入（以首个剖析的字符确定基底）
</td>
<td> SCNi<b>x</b>
</td>
<td> SCNiLEAST<b>x</b>
</td>
<td> SCNiFAST<b>x</b>
</td>
<td> SCNiMAX
</td>
<td> SCNiPTR
</td></tr>
<tr>
<th> <code>u</code>
</th>
<td style="text-align:left;"> 无符号十进制整数值的输入
</td>
<td> SCNu<b>x</b>
</td>
<td> SCNuLEAST<b>x</b>
</td>
<td> SCNuFAST<b>x</b>
</td>
<td> SCNuMAX
</td>
<td> SCNuPTR
</td></tr>
<tr>
<th> <code>o</code>
</th>
<td style="text-align:left;"> 无符号八进制整数值的输入
</td>
<td> SCNo<b>x</b>
</td>
<td> SCNoLEAST<b>x</b>
</td>
<td> SCNoFAST<b>x</b>
</td>
<td> SCNoMAX
</td>
<td> SCNoPTR
</td></tr>
<tr>
<th> <code>x</code>
</th>
<td style="text-align:left;"> 无符号十六进制值类型的输入
</td>
<td> SCNx<b>x</b>
</td>
<td> SCNxLEAST<b>x</b>
</td>
<td> SCNxFAST<b>x</b>
</td>
<td> SCNxMAX
</td>
<td> SCNxPTR
</td></tr></table>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
<div class="t-example"><div class="t-example-live-link"><div class="coliru-btn coliru-btn-run-init">运行此代码</div></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="c source-c"><pre class="de1"><span class="co2">#include &lt;stdio.h&gt;</span>
<span class="co2">#include &lt;inttypes.h&gt;</span>
 
<span class="kw4">int</span> main<span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>
<span class="br0">{</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%zu<span class="es1">\n</span>"</span>, <span class="kw4">sizeof</span><span class="br0">(</span>int64_t<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%s<span class="es1">\n</span>"</span>, PRId64<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%+"</span>PRId64<span class="st0">"<span class="es1">\n</span>"</span>, INT64_MIN<span class="br0">)</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%+"</span>PRId64<span class="st0">"<span class="es1">\n</span>"</span>, INT64_MAX<span class="br0">)</span><span class="sy4">;</span>
 
    int64_t n <span class="sy1">=</span> <span class="nu0">7</span><span class="sy4">;</span>
    <a href="../io/fprintf.html"><span class="kw613">printf</span></a><span class="br0">(</span><span class="st0">"%+"</span>PRId64<span class="st0">"<span class="es1">\n</span>"</span>, n<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div></div>
<p>可能的输出：
</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="text source-text"><pre class="de1">8
lld
-9223372036854775808
+9223372036854775807
+7</pre></div></div> 
</div>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
<ul><li> <a href="../language/arithmetic_types.html" title="c/language/arithmetic types"> 算术类型</a>
</li></ul>
<table class="t-dsc-begin">

</table>

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